Story
Everything would have been perfect in the best of possible worlds if Death had not decided to come and pick up the hero's little sister. Despite being a kitten, he does not intend to let himself be carried away by this sinister character. Between fascination for the absurd, and immoderate taste for a sweet wickedness, Nekojiru stages Nyato and Nyata, who under their airs of cute little kittens, will set fire to the whole planet. (Source: IMHO, translated) Note: -Originally serialized in Monthly Manga Garo for 31 chapters, starting with the 1990-06 and ending with the 1995-10 issue.
Synopsis via AniList (English).